■ put-side pain■ call-side painTotal payout option writers would owe at each settle price (both sides, all open interest, ×100 shares) — low settles hurt put writers, high settles hurt call writers. The minimum — 272.5 — is the max pain price.
Open interest by strike · Fri, Oct 23
■ calls (up)■ puts (down)ARM open contracts per strike for Fri, Oct 23.
Open-interest change — building vs unwinding
Needs two observed snapshot days for this expiration — the comparison appears automatically once the next weekday snapshot lands. We diff real observations only; nothing is estimated.
Volume by strike · Fri, Oct 23
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Oct 23
— call IV— put IVATM ≈ 69.4% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Oct 23
Net dealer gamma per strike, in dollars per 1% move, assuming the standard convention (dealers long calls, short puts) — an assumption, not an observation. Above the amber flip level hedging tends to dampen moves; below it, to amplify them.
Greeks by strike · Fri, Oct 23
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.96
-0.14
195
0.0032
0.04
-0.14
-0.04
0.94
-0.18
200
0.0043
0.05
-0.18
-0.06
0.91
-0.23
205
0.0057
0.06
-0.23
-0.09
0.88
-0.29
210
0.0074
0.07
-0.30
-0.12
0.84
-0.36
215
0.0092
0.09
-0.37
-0.17
0.78
-0.43
220
0.0111
0.11
-0.44
-0.22
0.72
-0.50
225
0.0128
0.13
-0.50
-0.28
0.65
-0.55
230
0.0142
0.14
-0.55
-0.35
0.57
-0.58
235
0.0150
0.15
-0.58
-0.43
0.50
-0.59
240
0.0154
0.15
-0.59
-0.50
0.42
-0.57
245
0.0151
0.15
-0.58
-0.58
0.39
-0.56
247.5
0.0148
0.14
-0.56
-0.61
0.35
-0.54
250
0.0144
0.14
-0.54
-0.65
0.32
-0.52
252.5
0.0138
0.13
-0.52
-0.68
0.29
-0.49
255
0.0132
0.13
-0.49
-0.72
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 60 are in the CSV. Δ per $1 of underlying · Θ per day · vega per IV point.
Stacked — layer the expirations
Call open interest per strike, stacked across the checked expirations — each color is one expiry. Strikes are pruned to the liquid center of each chain.
Max pain is arithmetic, not prophecy: the settle price that would minimize what option writers pay out at expiration, computed from open interest alone. Prices sometimes gravitate toward heavy strikes into expiry — dealer hedging is a real flow — but the evidence that max pain predicts settlement better than chance is mixed, and we are not going to pretend otherwise. Use it as a map of where positioning is stacked, next to the fundamentals and the earnings calendar, not as a target.
Data: Cboe delayed public feed (~15 minutes), refreshed here about every 15 minutes. Open interest itself updates once daily, before the open. Educational information, not investment advice.